Executive Summary

Summary
Title Bochs: Multiple vulnerabilities
Informations
Name GLSA-200711-21 First vendor Publication 2007-11-17
Vendor Gentoo Last vendor Modification 2007-11-17
Severity (Vendor) High Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

Multiple vulnerabilities have been discovered in Bochs, possibly allowing for the execution of arbitrary code or a Denial of Service.

Background

Bochs is a IA-32 (x86) PC emulator written in C++.

Description

Tavis Ormandy of the Google Security Team discovered a heap-based overflow vulnerability in the NE2000 driver (CVE-2007-2893). He also discovered a divide-by-zero error in the emulated floppy disk controller (CVE-2007-2894).

Impact

A local attacker in the guest operating system could exploit these issues to execute code outside of the virtual machine, or cause Bochs to crash.

Workaround

There is no known workaround at this time.

Resolution

All Bochs users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-emulation/bochs-2.3"

References

[ 1 ] CVE-2007-2893 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2893
[ 2 ] CVE-2007-2894 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2894

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200711-21.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-200711-21.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:20256
 
Oval ID: oval:org.mitre.oval:def:20256
Title: DSA-1351-1 bochs - buffer overflow
Description: Tavis Ormandy discovered that bochs, a highly portable IA-32 PC emulator, is vulnerable to a buffer overflow in the emulated NE2000 network device driver, which may lead to privilege escalation.
Family: unix Class: patch
Reference(s): DSA-1351-1
CVE-2007-2893
 Version: 5
Platform(s): Debian GNU/Linux 4.0
 Product(s): bochs
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

OpenVAS Exploits

Date Description
2009-02-27 Name : Fedora Update for bochs FEDORA-2007-1153
File : nvt/gb_fedora_2007_1153_bochs_fc7.nasl
2009-02-27 Name : Fedora Update for bochs FEDORA-2007-1778
File : nvt/gb_fedora_2007_1778_bochs_fc7.nasl
2008-09-24 Name : Gentoo Security Advisory GLSA 200711-21 (bochs)
File : nvt/glsa_200711_21.nasl
2008-01-31 Name : Debian Security Advisory DSA 1351-1 (bochs)
File : nvt/deb_1351_1.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
42119 Bochs Emulated Floppy Disk Controller Unspecified Divide-By-Zero Local DoS
36799 Bochs NE2000 iodev/ne2k.cc bx_ne2k_c::rx_frame Function Local Overflow

Nessus® Vulnerability Scanner

Date Description
2007-11-20 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200711-21.nasl - Type : ACT_GATHER_INFO
2007-11-06 Name : The remote Fedora host is missing a security update.
File : fedora_2007-1153.nasl - Type : ACT_GATHER_INFO
2007-11-06 Name : The remote Fedora host is missing a security update.
File : fedora_2007-1778.nasl - Type : ACT_GATHER_INFO
2007-08-13 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-1351.nasl - Type : ACT_GATHER_INFO
2007-05-03 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-1284.nasl - Type : ACT_GATHER_INFO
2007-05-02 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_0ac89b39f82911dbb55c000e0c6d38a9.nasl - Type : ACT_GATHER_INFO

Alert History

If you want to see full details history, please login or register.
0
Date Informations
2014-02-17 11:35:19
  • Multiple Updates